# -*- coding: utf-8 -*-
# author yzs
# date 2018-12-08
#
# Description
# Your task is to calculate the sum of some integers.
# Input
# Input contains multiple test cases, and one case one line. Each case starts with an integer N, and then N integers follow in the same line.
# Output
# For each test case you should output the sum of N integers in one line, and with one line of output for each line in input.
# Sample Input 1 
# 4 1 2 3 4
# 5 1 2 3 4 5
# Sample Output 1
# 10
# 15

while True:
    try:
        data = list(map(int, input().strip().split()))
        n, array = data[0], data[1:]
        sum = 0
        for i in range(n):
            sum += array[i]
        print(sum)
    except EOFError:
        break